Pipe with an outer wrap

Abstract

The embodiments of the present disclosure provide a method of applying an outer wrap to a corrugated pipe. The method comprises receiving a corrugated pipe that is cut to length, determining a wrap type to be applied to the corrugated pipe, determining a flow rate for applying a wrap of the wrap type based on a type of plastic used in the wrap, a type of fiber used in the wrap, and the wrap type, and applying a wrap made of the type of fiber and the type of plastic to the corrugated pipe using the determined flow rate.

What is claimed is: 
     
       1. A method of applying an outer wrap to a corrugated pipe comprising:
 receiving a corrugated pipe that is cut to length; 
 determining a wrap type to be applied to the corrugated pipe; 
 determining a flow rate for applying a wrap of the wrap type based on a type of plastic used in the wrap, a type of fiber used in the wrap, and the wrap type; 
 extruding the type of plastic at the determined flow rate; and 
 applying a wrap made of the type of fiber and the type of plastic to the corrugated pipe using the determined flow rate, wherein applying the wrap includes pulling the wrap at a predetermined ratio relative to the determined flow rate. 
 
     
     
       2. The method of  claim 1 , wherein the type of fiber comprises continuous strand fiber. 
     
     
       3. The method of  claim 1 , wherein the type of fiber comprises short strands of fiber having a length ranging from about 0.25 inches to about 1 inch. 
     
     
       4. The method of  claim 1 , wherein the wrap type is determined based on a required strength and a type of available fiber. 
     
     
       5. The method of  claim 1 , wherein the wrap type includes one or more of: oriented continuous strand fiber, semi-oriented non-continuous fiber, or fiberglass impregnation. 
     
     
       6. The method of  claim 1 , further comprising:
 heating the type of plastic used in the wrap to a predetermined temperature. 
 
     
     
       7. The method of  claim 6 , wherein the determined flow rate ranges from 15 to 25 feet per minute. 
     
     
       8. The method of  claim 1 , wherein the corrugated pipe comprises:
 an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section. 
 
     
     
       9. The method of  claim 8 , wherein applying the wrap further comprises applying the wrap to span the corrugation crests. 
     
     
       10. The method of  claim 1 , wherein the corrugated pipe comprises:
 an axially extended bore defined by a corrugated outer wall, wherein the corrugated outer wall comprises plastic, and the corrugated outer wall has an axial cross-section that is continuous. 
 
     
     
       11. The method of  claim 10 , wherein applying the wrap further comprises applying the wrap in an overlapping helical pattern to completely cover the outer wall of the corrugated pipe. 
     
     
       12. A method of applying an outer wrap to a corrugated pipe comprising:
 receiving an uncut corrugated pipe from a pipe extrusion device; 
 determining a wrap type to apply to the uncut corrugated pipe; 
 determining a flow rate for applying a wrap of the wrap type based on a type of plastic used in the wrap, a type of fiber used in the wrap, and the wrap type; 
 extruding the type of plastic at the determined flow rate; and 
 applying a wrap made of the type of fiber and the type of plastic to the corrugated pipe using the determined flow rate, wherein applying the wrap includes pulling the wrap at a predetermined ratio relative to the determined flow rate. 
 
     
     
       13. The method of  claim 12 , wherein the type of fiber comprises continuous strand fiber. 
     
     
       14. The method of  claim 12 , wherein the type of fiber comprises short strands of fiber having a length ranging from about 0.25 inches to about 1 inch. 
     
     
       15. The method of  claim 12 , wherein the wrap type is determined based on a required strength and a type of available fiber. 
     
     
       16. The method of  claim 12 , wherein the wrap type includes one or more of: oriented continuous strand fiber, semi-oriented non-continuous fiber, or fiberglass impregnation. 
     
     
       17. The method of  claim 12 , wherein applying the wrap comprises:
 applying the wrap from a rotating wrap extrusion device that circumscribes an outer surface of the uncut corrugated pipe with the wrap. 
 
     
     
       18. The method of  claim 17 , wherein the rotating wrap extrusion device pulls the wrap by rotating at a velocity that is greater than the flow rate based on the predetermined ratio relative to the flow rate. 
     
     
       19. The method of  claim 12 , further comprising:
 heating the type of plastic used in the wrap to a predetermined temperature. 
 
     
     
       20. The method of  claim 19 , wherein the determined flow rate ranges from 15 to 25 feet per minute. 
     
     
       21. The method of  claim 12 , wherein the corrugated pipe comprises:
 an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section. 
 
     
     
       22. The method of  claim 21 , wherein applying the wrap further comprises applying the wrap to span the corrugation crests. 
     
     
       23. The method of  claim 12 , wherein the corrugated pipe comprises:
 an axially extended bore defined by a corrugated outer wall, wherein the outer wall comprises plastic, and the corrugated outer wall has an axial cross-section that is continuous. 
 
     
     
       24. The method of  claim 23 , wherein applying the wrap further comprises applying the wrap in an overlapping helical pattern to completely cover the outer wall of the corrugated pipe.